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https://www.readbyqxmd.com/read/29165026/comparative-evaluation-of-oral-and-dento-maxillofacial-manifestation-of-patients-with-sickle-cell-diseases-and-beta-thalassemia-major
#1
Salmeh Kalbassi, Mohammad Reza Younesi, Vahid Asgary
BACKGROUND: Regarding the importance of oral and dental health in patients with hemoglobinopathies and also due to the different results of different studies in this background, in patients with beta thalassemia (BTM) and sickle cell disease (SCD), this study aimed to evaluate and compare the oral and dental manifestations of patients with BTM and SCD. MATERIAL AND METHODS: In this cross-sectional study during the years 2014-2017, a total of 175 patients (with documented BTM or SCD attending to Tehran, Mashhad, Isfahan, and Tabriz cities central hospitals) were randomly recruited...
November 22, 2017: Hematology (Amsterdam, Netherlands)
https://www.readbyqxmd.com/read/29164827/inhibitors-against-fungal-cell-wall-remodelling-enzymes
#2
Pedro Merino, Ignacio Delso, Jessika Valero-Gonzalez, Fernando Gomollon-Bel, Jorge Castro-Lopez, Wenxia Fang, Iva Navratilova, Daan M F van Aalten, Tomas Tejero, Ramon Hurtado-Guerrero
Fungal beta-1,3-glucan glucanosyltransferases are glucan-remodeling enzymes that play important roles in cell wall integrity, and are essential for the viability of pathogenic fungi/yeasts. As such, they are considered possible drug targets, although inhibitors of this class of enzymes have not yet been reported. Here, we report a multidisciplinary approach, based on a structure-guided design using a highly conserved transglycosylase from Sacharomyces cerevisiae, that leads to carbohydrate derivatives with high affinity for Aspergillus fumigatus Gel4...
November 22, 2017: ChemMedChem
https://www.readbyqxmd.com/read/29164808/a-universal-approach-to-correct-various-hbb-gene-mutations-in-human-stem-cells-for-gene-therapy-of-beta-thalassemia-and-sickle-cell-disease
#3
Liuhong Cai, Hao Bai, Vasiliki Mahairaki, Yongxing Gao, Chaoxia He, Yanfei Wen, You-Chuan Jin, You Wang, Rachel L Pan, Armaan Qasba, Zhaohui Ye, Linzhao Cheng
Beta-thalassemia is one of the most common recessive genetic diseases, caused by mutations in the HBB gene. Over 200 different types of mutations in the HBB gene containing three exons have been identified in patients with β-thalassemia (β-thal) whereas a homozygous mutation in exon 1 causes sickle cell disease (SCD). Novel therapeutic strategies to permanently correct the HBB mutation in stem cells that are able to expand and differentiate into erythrocytes producing corrected HBB proteins are highly desirable...
November 21, 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/29164679/novel-antioxidant-and-anti-inflammatory-peptides-from-the-siamese-crocodile-crocodylus-siamensis-hemoglobin-hydrolysate
#4
Jiraporn Lueangsakulthai, Santi Phosri, Tinnakorn Theansungnoen, Nisachon Jangpromma, Theeranan Temsiripong, John E Mckendrick, Watcharee Khunkitti, Sompong Klaynongsruang
Novel antioxidant and anti-inflammatory peptides were isolated from hydrolysates of Siamese crocodile (Crocodylus siamensis) hemoglobin. Crocodylus siamensis hemoglobin hydrolysates (CHHs) were obtained by pepsin digestion at different incubation times (2, 4, 6 and 8 H) at 37 °C and subjected to antioxidant and anti-inflammatory activity assessment. CHH obtained by 2-H hydrolysis (2H-CHH) showed the highest anti-inflammatory activity with respect to decreasing nitric oxide (NO) production, while the strongest antioxidant activity was found for 6-H hydrolysis (6H-CHH) against nitric oxide radicals...
November 22, 2017: Biotechnology and Applied Biochemistry
https://www.readbyqxmd.com/read/29164629/impact-of-ultraviolet-radiation-on-expression-of-transforming-growth-factor-beta-smad2-metalloproteinases-cathepsin-k-and-progerin
#5
Magdalena Ciążyńska, Igor A Bednarski, Karolina Wódz, Joanna Narbutt, Michał Sobjanek, Anna Woźniacka, Aleksandra Lesiak
Ultraviolet radiation (UVR) is one of the most important environmental factors involved in photoaging. Exposure to UVR leads to dysregulation of expression of cell-cycle-related proteins which play key role in skin photodegradation that pretends to develop carcinogenesis. This study examines the role of various UVB doses on the expression of transforming growth factor beta (TGF-β), Smad2, cathepsin K, progerin and matrix metalloproteinases (MMPs)-1,-3,-8,-9. A group consisting of 63 healthy individuals underwent one of the following treatments: 1) whole-body exposed to UVB irradiation on each of 10 consecutive days with 0...
November 22, 2017: Photochemistry and Photobiology
https://www.readbyqxmd.com/read/29164616/protection-against-%C3%AE-amyloid-neurotoxicity-by-a-non-toxic-endogenous-n-terminal-%C3%AE-amyloid-fragment-and-its-active-hexapeptide-core-sequence
#6
Kelly H Forest, Naghum Alfulaij, Komal Arora, Ruth Taketa, Tessi Sherrin, Cedomir Todorovic, James L M Lawrence, Gene T Yoshikawa, Ho-Leung Ng, Victor J Hruby, Robert A Nichols
High levels (μM) of beta amyloid (Aβ) oligomers are known to trigger neurotoxic effects, leading to synaptic impairment, behavioral deficits and apoptotic cell death. The hydrophobic C-terminal domain of Aβ, together with sequences critical for oligomer formation, is essential for this neurotoxicity. However, Aβ at low levels (pM-nM) has been shown to function as a positive neuromodulator and this activity resides in the hydrophilic N-terminal domain of Aβ. An N-terminal Aβ fragment (1-15/16), found in cerebrospinal fluid, was also shown to be a highly active neuromodulator and to reverse Aβ-induced impairments of long-term potentiation...
November 21, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/29164474/microcystic-calcifying-epithelial-odontogenic-tumor
#7
Celeste Sánchez-Romero, Román Carlos, Oslei Paes de Almeida, Mário José Romañach
Microcystic variant of calcifying epithelial odontogenic tumor is rare. We herein describe an additional well-documented case of microcystic CEOT. The affected patient is a Guatemalan 42-year-old female with an expansile well-defined mixed radiolucent-radiopaque lesion located in the right posterior mandible. The lesion was associated to an unerupted third molar. Histopathologic examination revealed nests and cords of moderately pleomorphic, eosinophilic polyhedral epithelial cells surrounded by a fibromyxoid stroma...
November 21, 2017: Head and Neck Pathology
https://www.readbyqxmd.com/read/29163768/inhibitor-of-growth-protein-4-interacts-with-beclin-1-and-represses-autophagy
#8
Valentina Sica, José Manuel Bravo-San Pedro, Guo Chen, Guillermo Mariño, Sylvie Lachkar, Valentina Izzo, Maria Chiara Maiuri, Mireia Niso-Santano, Guido Kroemer
Beclin 1 (BECN1) is a multifunctional protein that activates the pro-autophagic class III phosphatidylinositol 3-kinase (PIK3C3, best known as VPS34), yet also interacts with multiple negative regulators. Here we report that BECN1 interacts with inhibitor of growth family member 4 (ING4), a tumor suppressor protein that is best known for its capacity to interact with the tumor suppressor protein p53 (TP53) and the acetyltransferase E1A binding protein p300 (EP300). Removal of TP53 or EP300 did not affect the BECN1/ING4 interaction, which however was lost upon culture of cells in autophagy-inducing, nutrient free conditions...
October 27, 2017: Oncotarget
https://www.readbyqxmd.com/read/29163733/can-antioxidative-status-be-involved-in-type-1-diabetes
#9
Cintia Castro-Correia, M Luz Maia, Sonia Norberto, Cristina Costa-Santos, M Fatima Barroso, Ana Carvalho, Manuel Fontoura, Valentina Domingues, Conceicao Calhau
Background: Type 1 diabetes mellitus (T1DM) is an autoimmune disease with beta-cell destruction, resulting in insulin deficiency. It is now clear that environmental factors also play a role in disease development. The prevalence of type 1 diabetes in children and young people in Portugal is 0.16% between 0 and 19 years of age. The main cause of death in T1DM is cardiovascular disease, and early endothelial dysfunction is its pathophysiologycal precursor. Hyperglycemia is associated with increased production of free radicals and increased oxidative stress...
December 2017: Journal of Clinical Medicine Research
https://www.readbyqxmd.com/read/29163548/emodin-alleviates-sodium-taurocholate-induced-pancreatic-acinar-cell-injury-via-microrna-30a-5p-mediated-inhibition-of-high-temperature-requirement-a-transforming-growth-factor-beta-1-inflammatory-signaling
#10
Hong Xiang, Xufeng Tao, Shilin Xia, Jialin Qu, Huiyi Song, Jianjun Liu, Dong Shang
Pancreatitis is an inflammatory disease that is responsible for substantial morbidity and mortality, and it can induce pancreatic necrosis that starts within pancreatic acinar cells in severe cases. Emodin, a pleiotropic natural product isolated from the Chinese herb Rheum palmatum L., has effective anti-inflammatory activities. In this paper, we investigated the protective effects and molecular mechanism of emodin against sodium taurocholate (STC)-induced pancreatic acinar cells injury in vitro and in vivo; and the results showed that emodin could significantly alleviate STC-induced pancreatic acinar cells injury through decreasing trypsin, amylase and the release of inflammatory factors (tumor necrosis factor alpha, interleukin-1β, and interleukin-6)...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29163528/the-role-of-transforming-growth-factor-beta-1-in-the-progression-of-hiv-aids-and-development-of-non-aids-defining-fibrotic-disorders
#11
REVIEW
Annette J Theron, Ronald Anderson, Theresa M Rossouw, Helen C Steel
Even after attainment of sustained viral suppression following implementation of highly active antiretroviral therapy, HIV-infected persons continue to experience persistent, low-grade, systemic inflammation. Among other mechanisms, this appears to result from ongoing microbial translocation from a damaged gastrointestinal tract. This HIV-related chronic inflammatory response is paralleled by counteracting, but only partially effective, biological anti-inflammatory processes. Paradoxically, however, this anti-inflammatory response not only exacerbates immunosuppression but also predisposes for development of non-AIDS-related, non-communicable disorders...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29163160/aberrant-wnt-beta-catenin-pathway-activation-in-dialysate-induced-peritoneal-fibrosis
#12
Yuanyuan Guo, Lin Sun, Li Xiao, Rong Gou, Yudong Fang, Yan Liang, Ruiqiang Wang, Ningjun Li, Fuyou Liu, Lin Tang
Peritoneal dialysis (PD)-associated peritoneal fibrosis is a chronic progress which induces ultrafiltration failure. It remains a challenge to prevent the progression of PD-associated fibrosis in clinic practice. Wnt/β-catenin pathway plays important role in many severe fibrotic diseases, here we investigated its contribution to the development of peritoneal damage. We isolated mesothelial cells (MC) from the effluent of PD patients and found that the expressions of Wnt1, Wnt5a, β-catenin, and LEF1 were increased in patients with more than 1-year PD compared with patients who just started with PD (<1 month)...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29163031/microrna-mediated-regulation-of-itgb3-and-chl1-is-implicated-in-ssri-action
#13
Keren Oved, Luba Farberov, Avial Gilam, Ifat Israel, Danielle Haguel, David Gurwitz, Noam Shomron
Background: Selective serotonin reuptake inhibitor (SSRI) antidepressant drugs are the first-line of treatment for major depressive disorder (MDD) but are effective in <70% of patients. Our earlier genome-wide studies indicated that two genes encoding for cell adhesion proteins, close homolog of L1 (CHL1) and integrin beta-3 (ITGB3), and microRNAs, miR-151a-3p and miR-221/222, are implicated in the variable sensitivity and response of human lymphoblastoid cell lines (LCL) from unrelated individuals to SSRI drugs...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/29162448/intracellular-cholesterol-level-regulates-sensitivity-of-glioblastoma-cells-against-temozolomide-induced-cell-death-by-modulation-of-caspase-8-activation-via-death-receptor-5-accumulation-and-activation-in-the-plasma-membrane-lipid-raft
#14
Yutaro Yamamoto, Arata Tomiyama, Nobuyoshi Sasaki, Hideki Yamaguchi, Takuya Shirakihara, Katsuhiko Nakashima, Kosuke Kumagai, Satoru Takeuchi, Terushige Toyooka, Kojiro Wada, Yoshitaka Narita, Koichi Ichimura, Ryuichi Sakai, Hiroki Namba, Kentaro Mori
Development of resistance against temozolomide (TMZ) in glioblastoma (GBM) after continuous treatment with TMZ is one of the critical problems in clinical GBM therapy. Intracellular cholesterol regulates cancer cell biology, but whether intracellular cholesterol is involved in TMZ resistance of GBM cells remains unclear. The involvement of intracellular cholesterol in acquired resistance against TMZ in GBM cells was investigated. Intracellular cholesterol levels were measured in human U251 MG cells with acquired TMZ resistance (U251-R cells) and TMZ-sensitive control U251 MG cells (U251-Con cells), and found that the intracellular cholesterol level was significantly lower in U251-R cells than in U251-Con cells...
November 18, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29162361/impaired-beta-cell-sensitivity-to-incretins-in-type-2-diabetes-is-insufficiently-compensated-by-higher-incretin-response
#15
A Tura, J I Bagger, E Ferrannini, J J Holst, F K Knop, T Vilsbøll, A Mari
BACKGROUND AND AIMS: The incretin effect is impaired in type 2 diabetes (T2D), but the underlying mechanisms are only partially understood. We investigated the relationships between the time course of the incretin effect and that of glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide-1 (GLP-1) during oral glucose tolerance tests (OGTTs), thereby estimating incretin sensitivity of the beta cell, and its associated factors. METHODS AND RESULTS: Eight patients with T2D and eight matched subjects with normal glucose tolerance (NGT) received 25, 75, and 125 g OGTTs and corresponding isoglycemic glucose infusions (IIGI)...
October 13, 2017: Nutrition, Metabolism, and Cardiovascular Diseases: NMCD
https://www.readbyqxmd.com/read/29161701/yin-yang-1-dynamically-regulates-antiviral-innate-immune-responses-during-viral-infection
#16
Jie Zan, Hao Zhang, Ai-Ping Gu, Kai-Lun Zhong, Min-Yi Lu, Xiao-Xin Bai, Jin-Yang Zhang, Jun Cai
BACKGROUND/AIMS: Type I interferon (IFN-1) production and IFN-1 signaling play critical roles in the host antiviral innate immune responses. Although transcription factor Yin Yang 1 (YY1) has been reported to have a dual activator/repressor role during the regulation of interferon beta (IFN-β) promoter activity, the roles of YY1 in the regulation of upstream signaling pathways leading to IFN-1 induction and IFN-1 signaling during viral infection remain to be elucidated. METHODS: The roles of YY1 in IFN-1 production and IFN-1 signaling were investigated using immunoblotting, real-time PCR, small interfering RNA (siRNA)-mediated YY1 knockdown, YY1 overexpression by transient transfection, and co-immunoprecipitation, using mouse cells...
November 20, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29161661/chlorogenic-acid-prevents-diabetic-nephropathy-by-inhibiting-oxidative-stress-and-inflammation-through-modulation-of-the-nrf2-ho-1-and-nf-%C3%A4-b-pathways
#17
Liping Bao, Jushuang Li, Dongqing Zha, Lian Zhang, Ping Gao, Tao Yao, Xiaoyan Wu
Oxidative and inflammatory damage have been suggested to play important roles in the pathogenesis of diabetic nephropathy (DN). Chlorogenic acid (CGA) is one of the most abundant polyphenols and has known immunoprotective, antioxidant and anti-inflammatory properties. In the present study, animal experiments were designed to examine the protective effects of CGA in DN, and cellular experiments were designed to explore the underlying mechanisms. CGA significantly attenuated diabetic renal damage based on histological pathology and molecular biological methods...
November 18, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/29161447/dna-polymerase-beta-participates-in-dna-end-joining
#18
Sreerupa Ray, Gregory Breuer, Michelle DeVeaux, Daniel Zelterman, Ranjit Bindra, Joann B Sweasy
DNA double strand breaks (DSBs) are one of the most deleterious lesions and if left unrepaired, they lead to cell death, genomic instability and carcinogenesis. Cells combat DSBs by two pathways: homologous recombination (HR) and non-homologous end-joining (NHEJ), wherein the two DNA ends are re-joined. Recently a back-up NHEJ pathway has been reported and is referred to as alternative NHEJ (aNHEJ), which joins ends but results in deletions and insertions. NHEJ requires processing enzymes including nucleases and polymerases, although the roles of these enzymes are poorly understood...
November 17, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/29160954/islet-allo-autotransplantation-allogeneic-pancreas-transplantation-followed-by-transplant-pancreatectomy-and-islet-transplantation
#19
M F Nijhoff, J Dubbeld, A R van Erkel, P J M van der Boog, T J Rabelink, M A Engelse, E J P de Koning
Simultaneous pancreas/kidney (SPK) transplantation is an important treatment option for patients with type 1 diabetes (T1D) and end stage renal disease (ESRD). Due to complications, in up to 10% of cases allograft pancreatectomy is necessary shortly after transplantation. Usually the donor pancreas is discarded. Here we report on a novel procedure to rescue endocrine tissue after allograft pancreatectomy. A 39-year-old woman with T1D and ESRD who had received an SPK transplantation required emergency allograft pancreatectomy due to bleeding at the vascular anastomosis...
November 21, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/29160911/simultaneous-use-of-erythropoietin-and-lfm-a13-as-a-new-therapeutic-approach-for-colorectal-cancer
#20
Anna Tankiewicz-Kwedlo, Justyna Magdalena Hermanowicz, Tomasz Domaniewski, Krystyna Pawlak, Małgorzata Rusak, Anna Pryczynicz, Arkadiusz Surazynski, Tomasz Kaminski, Adam Kazberuk, Dariusz Pawlak
BACKGROUND AND PURPOSE: Bruton's tyrosine kinase (BTK) is a non-receptor tyrosine kinase involved in the activation of signaling pathways responsible for cell maturation and viability. BTK has previously been reported to be overexpressed in colon cancers. This kind of cancer is often accompanied by anemia, which is treated with an erythropoietin supplement. The goal of the present study was to assess the effects of combination therapy with erythropoietin beta (Epo) and LFM-A13 (BTK inhibitor) on colon cancer in in vitro and in vivo models...
November 21, 2017: British Journal of Pharmacology
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